Survey of selected pathogens in free-ranging pinnipeds in Uruguay
Marine mammals, regarded as sentinels of aquatic ecosystem health, are exposed to different pathogens and parasites under natural conditions. We surveyed live South American fur seals Arctocephalus australis and South American sea lions Otaria flavescens in Uruguay for Leptospira spp., canine distem...
Published in: | Diseases of Aquatic Organisms |
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Language: | English |
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Inter Research
2022
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Online Access: | http://hdl.handle.net/10261/296455 https://doi.org/10.3354/dao03676 |
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ftcsic:oai:digital.csic.es:10261/296455 2024-02-11T10:08:13+01:00 Survey of selected pathogens in free-ranging pinnipeds in Uruguay Katz, H Schelotto, F. Bakker, D. Castro-Ramos, M. Gutiérrez-Expósito, D. Panzera, Y. Pérez, R. Franco-Trecu, V. Nury Hernández, E. Menéndez, C. Meny, P. Consejo Superior de Investigaciones Científicas (España) Universidad de la República (Uruguay) Gutiérrez Expósito, Daniel 2022 http://hdl.handle.net/10261/296455 https://doi.org/10.3354/dao03676 en eng Inter Research http://dx.doi.org/10.3354/dao03676 Sí doi:10.3354/dao03676 issn: 1616-1580 Diseases of Aquatic Organisms, 150: 69- 83 (2022) http://hdl.handle.net/10261/296455 none Arctocephalus australis Canine distemper virus Leptospira spp Mycobacterium spp Neospora caninum Otaria flavescens Toxoplasma gondii artículo 2022 ftcsic https://doi.org/10.3354/dao03676 2024-01-16T11:38:13Z Marine mammals, regarded as sentinels of aquatic ecosystem health, are exposed to different pathogens and parasites under natural conditions. We surveyed live South American fur seals Arctocephalus australis and South American sea lions Otaria flavescens in Uruguay for Leptospira spp., canine distemper virus (CDV), Mycobacterium spp., Toxoplasma gondii, and Neospora caninum. Samples were collected from 2007 to 2013. The seroprevalence of Leptospira spp. was 37.6% positive, 50.9% negative, and 11.5% suspect for A. australis (n = 61) while for O. flavescens (n = 12) it was 67% positive, 25% negative, and 8% suspect. CDV RNA was not detected in any of the analyzed samples. Most animals tested seropositive to tuberculosis antigens by WiZo ELISA (A. australis: 29/30; O. flavescens: 20/20); reactivity varied with a novel ELISA test (antigens MPB70, MPB83, ESAT6 and MPB59). Seroprevalence against N. caninum and T. gondii was 6.7 and 13.3% positive for O. flavescens and 0 and 2.2% positive for A. australis respectively. To evaluate possible sources of infection for pinnipeds, wild rats Rattus rattus and semi-feral cats Felis catus were also tested for Leptospira spp. and T. gondii respectively. Water samples tested for Leptospira revealed saprofitic L. bioflexa. Pathogenic Leptospira were detected in the kidneys of 2 rats, and cats tested positive for T. gondii (100%). These results represent a substantial contribution to the study of the health status of wild pinnipeds in Uruguay. CSIC (Council for Scientific Research) of the Universidad de la Republica. Peer reviewed Article in Journal/Newspaper Rattus rattus Digital.CSIC (Spanish National Research Council) Uruguay Diseases of Aquatic Organisms 150 69 83 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Arctocephalus australis Canine distemper virus Leptospira spp Mycobacterium spp Neospora caninum Otaria flavescens Toxoplasma gondii |
spellingShingle |
Arctocephalus australis Canine distemper virus Leptospira spp Mycobacterium spp Neospora caninum Otaria flavescens Toxoplasma gondii Katz, H Schelotto, F. Bakker, D. Castro-Ramos, M. Gutiérrez-Expósito, D. Panzera, Y. Pérez, R. Franco-Trecu, V. Nury Hernández, E. Menéndez, C. Meny, P. Survey of selected pathogens in free-ranging pinnipeds in Uruguay |
topic_facet |
Arctocephalus australis Canine distemper virus Leptospira spp Mycobacterium spp Neospora caninum Otaria flavescens Toxoplasma gondii |
description |
Marine mammals, regarded as sentinels of aquatic ecosystem health, are exposed to different pathogens and parasites under natural conditions. We surveyed live South American fur seals Arctocephalus australis and South American sea lions Otaria flavescens in Uruguay for Leptospira spp., canine distemper virus (CDV), Mycobacterium spp., Toxoplasma gondii, and Neospora caninum. Samples were collected from 2007 to 2013. The seroprevalence of Leptospira spp. was 37.6% positive, 50.9% negative, and 11.5% suspect for A. australis (n = 61) while for O. flavescens (n = 12) it was 67% positive, 25% negative, and 8% suspect. CDV RNA was not detected in any of the analyzed samples. Most animals tested seropositive to tuberculosis antigens by WiZo ELISA (A. australis: 29/30; O. flavescens: 20/20); reactivity varied with a novel ELISA test (antigens MPB70, MPB83, ESAT6 and MPB59). Seroprevalence against N. caninum and T. gondii was 6.7 and 13.3% positive for O. flavescens and 0 and 2.2% positive for A. australis respectively. To evaluate possible sources of infection for pinnipeds, wild rats Rattus rattus and semi-feral cats Felis catus were also tested for Leptospira spp. and T. gondii respectively. Water samples tested for Leptospira revealed saprofitic L. bioflexa. Pathogenic Leptospira were detected in the kidneys of 2 rats, and cats tested positive for T. gondii (100%). These results represent a substantial contribution to the study of the health status of wild pinnipeds in Uruguay. CSIC (Council for Scientific Research) of the Universidad de la Republica. Peer reviewed |
author2 |
Consejo Superior de Investigaciones Científicas (España) Universidad de la República (Uruguay) Gutiérrez Expósito, Daniel |
format |
Article in Journal/Newspaper |
author |
Katz, H Schelotto, F. Bakker, D. Castro-Ramos, M. Gutiérrez-Expósito, D. Panzera, Y. Pérez, R. Franco-Trecu, V. Nury Hernández, E. Menéndez, C. Meny, P. |
author_facet |
Katz, H Schelotto, F. Bakker, D. Castro-Ramos, M. Gutiérrez-Expósito, D. Panzera, Y. Pérez, R. Franco-Trecu, V. Nury Hernández, E. Menéndez, C. Meny, P. |
author_sort |
Katz, H |
title |
Survey of selected pathogens in free-ranging pinnipeds in Uruguay |
title_short |
Survey of selected pathogens in free-ranging pinnipeds in Uruguay |
title_full |
Survey of selected pathogens in free-ranging pinnipeds in Uruguay |
title_fullStr |
Survey of selected pathogens in free-ranging pinnipeds in Uruguay |
title_full_unstemmed |
Survey of selected pathogens in free-ranging pinnipeds in Uruguay |
title_sort |
survey of selected pathogens in free-ranging pinnipeds in uruguay |
publisher |
Inter Research |
publishDate |
2022 |
url |
http://hdl.handle.net/10261/296455 https://doi.org/10.3354/dao03676 |
geographic |
Uruguay |
geographic_facet |
Uruguay |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_relation |
http://dx.doi.org/10.3354/dao03676 Sí doi:10.3354/dao03676 issn: 1616-1580 Diseases of Aquatic Organisms, 150: 69- 83 (2022) http://hdl.handle.net/10261/296455 |
op_rights |
none |
op_doi |
https://doi.org/10.3354/dao03676 |
container_title |
Diseases of Aquatic Organisms |
container_volume |
150 |
container_start_page |
69 |
op_container_end_page |
83 |
_version_ |
1790607251562561536 |